Active iron carbon catalyst for treating industrial wastewater

Abstract

The invention discloses an active iron carbon catalyst for treating industrial wastewater. The active iron carbon catalyst is prepared from 40 wt%-60 wt% of iron-titanium alloy powder, 20 wt%-40 wt% of active fiber carbon powder, 5 wt%-10 wt% of bauxite, 3 wt%-5 wt% of Guangdong black clay, 3 wt%-5 wt% of Pingxiang white clay, 1 wt%-2 wt% of tin oxide powder and 2%-3% of a pore forming agent. The active iron carbon catalyst is roasted at the high temperature, iron and carbon are fused together, the inside of the catalyst is of a honeycomb netty-hole structure, the catalyst has the high specific area and gap rate, it can be effectively avoided that the catalyst is hardened and passivated, wastewater is rapidly sucked through honeycomb netty holes inside the catalyst, the reacting efficiency is improved, micro currents are formed through the iron-carbon electric potential difference generated through microelectrolysis to excite industrial wastewater, and new ecological hydrogen and oxygen are generated; through the reducibility and the oxidability of hydrogen and oxygen, wastewater is subjected to a strong oxidation-reduction reaction, and therefore hardly degradable substances are converted into easily degradable substances.

Description

technical field [0001] The invention relates to water treatment, in particular to an active iron-carbon catalyst for industrial waste water pretreatment. Background technique [0002] As we all know, industrial metallurgy, coking, electroplating, papermaking, medicine, printing and dyeing and other industries will produce a large amount of organic industrial wastewater. These organic industrial wastewater is a kind of high-concentration refractory polymer organic industrial wastewater. It is a refractory product with poor biodegradability and high toxicity. In order to make the final discharge of organic industrial wastewater meet the national standards and ensure that the environment is not polluted, the organic industrial wastewater must be pretreated first to remove COD, NH3-N macromolecular harmful substances such as phenol, cyanide, oil, etc. The pressure of subsequent advanced treatment. At present, the treatment methods of organic industrial wastewater include physi...

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Problems solved by technology

[0004] The electrolytic filler (also known as catalyst) in the iron-carbon micro-electrolysis technology mostly adopts a fixed iron-carbon bed, but because the iron particles in the iron-carbon bed are not evenly dispersed, the iron particles are prone to rust and harden, which makes it easy to rust during use. Hardening is easy to occur in the medium, which will not only cause the interruption of the micro-electrolysis process and affect the treatment effect, but also frequently replace the micro-electrolysis materials, which will result in heavy workload and high cost, and reduce the treatment efficiency of wastewater

At present, people mix and press scrap iron scraps with activated carbon and binders or enamel and dry them in a long granular form, and then bake them into granular or spherical micro-electrolytic fillers. The problem of hardening, but this kind of micro-electrolytic filler is that the surface and interior are relatively tight after pressing and sintering, and refractory substances gather on the surface of the filler to form a passivation film, which will not only hinder the normal progress of the electrolytic reaction, but also is not conducive to the backwash of the electrolytic filler.